Synonym for parasitic life forms that walk upright whose main desires are: domination, manipulation, copulation (7 billion and counting) and creating drama whenever possible. We are not yet destroyed only because we serve as real life sitcoms for aliens to watch.

Alien number 1: Wow, look at those people killing each other!
Alien number 2: 3 million years and this series is still great!
Alien number 1: Can't believe they are still fun to watch but once they get boring and peaceful we'll wipe them out.

People like to think they're sooooo advanced and beyond animals because they have art, music, and technology when all the while not one of these things (or anything else they've created for that matter) will mean a thing after people die just like every other organism on the planet. The only thing that truly seperates people from any other animal is that they are aware of their own mortality, and if you ask me that's not really something to be proud of.